January 2010 - Boost-users - lists.preview.boost.org

Boost 1.33.1 on 64-Bit Solaris/GNU gcc 3.4.6/BJam 3.1.11
by Gregory Tyler 25 Jan '10

25 Jan '10

Hi, I'm new to Boost, and I have not used C++ in years. I have been asked to determine whether Boost 1.33.1 can be compiled for 64-bit Solaris, and if so, then what precautions must be taken. I found this page, which seems to suggest that Boost cannot currently be compiled for Solaris 10: http://groups.google.com/group/boost-list/browse_thread/thread/091716aaf543… On the other hand, this page seem to suggest that it is possible: http://shoaibmir.wordpress.com/2009/08/12/building-boost-under-solaris/ With GNU gcc 3.4.6, I seem to have successfully built BJam 3.1.11, the version of Boost Jam which is contemporary with Boost 1.33.1. When I try to build Boost, I'm getting the following error: PATH_TO_BOOST_HOME/tools/build/v1/boost-base.jam:1585: in find-compatible-subvariant *** argument error * rule split-target-subvariant ( target-var properties-var toolset-var variant-var : subvariant ) * called with: ( sv-target sv-properties sv-toolset sv-variant : <@boost!libs!serialization!build>libboost_serialization.a|gcc//<cxxflags>-Wno-non-virtual-dtor -Wno-ctor-dtor-privacy/<define>BOOST_LIB_DIAGNOSTIC=1/<sysinclude>PATH_TO_BOOST_HOME/<tag><prefix>-gcc-1_33_1/<address-model>default/<architecture>native/<build>yes/<debug-symbols>on/<inlining>off/<instruction-set>default/<object-model>default/<optimization>off/<profiling>off/<rtti>on/<runtime-link>dynamic/<shared-linkable>false/<target-type>LIB/<threading>single/<vtable-thunks>default|gcc| <@boost!libs!serialization!build>libboost_serialization.a|gcc/debug/<address-model>default/<architecture>native/<debug-symbols>on/<inlining>off/<instruction-set>default/<object-model>default/<optimization>off/<profiling>off/<rtti>on/<shared-linkable>false/<threading>single/<vtable-thunks>default/<cxxflags>-Wno-non-virtual-dtor -Wno-ctor-dtor-privacy/<define>BOOST_LIB_DIAGNOSTIC=1/<sysinclude>PATH_TO_BOOST_HOME/<tag><prefix>-gcc-d-1_33_1/<build>yes/<runtime-link>dynamic/<target-type>LIB|gcc|debug ) * extra argument <@boost!libs!serialization!build>libboost_serialization.a|gcc/debug/<address-model>default/<architecture>native/<debug-symbols>on/<inlining>off/<instruction-set>default/<object-model>default/<optimization>off/<profiling>off/<rtti>on/<shared-linkable>false/<threading>single/<vtable-thunks>default/<cxxflags>-Wno-non-virtual-dtor -Wno-ctor-dtor-privacy/<define>BOOST_LIB_DIAGNOSTIC=1/<sysinclude>PATH_TO_BOOST_HOME/<tag><prefix>-gcc-d-1_33_1/<build>yes/<runtime-link>dynamic/<target-type>LIB|gcc|debug PATH_TO_BOOST_HOME/tools/build/v1/boost-base.jam:2032:see definition of rule 'split-target-subvariant' being called PATH_TO_BOOST_HOME/tools/build/v1/boost-base.jam:1654: in link-libraries PATH_TO_BOOST_HOME/tools/build/v1/boost-base.jam:1857: in generate-dependencies PATH_TO_BOOST_HOME/tools/build/v1/boost-base.jam:1964: in subvariant-target PATH_TO_BOOST_HOME/tools/build/v1/boost-base.jam:2406: in stage Jamfile:226: in load-jamfiles PATH_TO_BOOST_HOME/tools/build/v1/bootstrap.jam:21: in boost-build PATH_TO_BOOST_HOME/boost-build.jam:16: in module scope Does this look familiar to anyone? What am I doing incorrectly? Thanks in advance, Greg _________________________________________________________________ Hotmail: Free, trusted and rich email service. http://clk.atdmt.com/GBL/go/196390708/direct/01/

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[smart pointer] need .get() to access derived class method?
by Diederick C. Niehorster 25 Jan '10

25 Jan '10

Hi All, I am trying to wrap my head around using shared pointer, but I find the documentation hard to follow, not being a professional programmer. I have a base class, from which many classes are derived and I hold the derived class instance as a point of type baseclass. Usually, I only need access to the base class methods, but now i need to access some of the derived class's methods. How do I do that from a shared pointer? I now have some mix of shared_pointer and "old style" pointer logic in my code, what am I missing? --- _pcStim = boost::shared_ptr<CStim>(new CStimUniform2D()); // create derived instance and store as base CStim* pCStimU = _pcStim.get(); // get raw pointer ((boost::shared_ptr<CStimUniform2D>)(_pcStim))->setNPointGround()=300; // this does not work, what do I need here? ((CStimUniform2D*)pCStimU)->SetPointColor()=_pRoomData->dotColor(); // casting the raw pointer I am fine. --- Best regards and thank you for your reply, Diederick Niehorster

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bjam with cross toolchain
by Pascal Kesseli 25 Jan '10

25 Jan '10

Hi everyone Currently, I am trying to get bjam compile boost using an embedded toolchain. The toolchain runs on windows, but the target is a linux device. The toolchain behaves more or less like a normal linux toolchian and I am using msys to simulate the shell environment. Trying to compile boost immediately issues the following errors: "g++" -ftemplate-depth-128 -O0 -fno-inline -Wall -g -mthreads -Winvalid-pch -DBOOST_ALL_NO_LIB=1 -DBOOST_BUILD_PCH_ENABLED -I"bin.v2\libs\math\build\gcc-3.3.2\debug\link-static\threading-multi\..\src \tr1" -I"." -I"libs\math\src\tr1" -c -o "bin.v2\libs\math\build\gcc-3.3.2\debug\link-static\threading-multi\ellint_2 f.o" "libs\math\build\..\src\tr1\ellint_2f.cpp" ...failed gcc.compile.c++ bin.v2\libs\math\build\gcc-3.3.2\debug\link-static\threading-multi\ellint_2f .o... gcc.compile.c++ bin.v2\libs\math\build\gcc-3.3.2\debug\link-static\threading-multi\ellint_3f .o cc1plus: error: invalid option `threads' cc1plus: error: unrecognized option `-Winvalid-pch' >From what I perceive here, I would say bjam tries to use the toolchain as a MinGW toolchain. How can I tell boost to use Linux toolchain settings, so use -pthread instead of -mthread and omit that strange "-Winvalid-pch" parameter? Thanks for any suggestions and best regards Pascal

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[bind][make_shared] compilation failure with ref arg
by Jeff Flinn 25 Jan '10

25 Jan '10

The last statement below fails to compile with boost 1.39.0 on MSVC 8. Am I doing anything obviously wrong? Any help is appreciated. Jeff #include <boost/bind.hpp> #include <boost/smart_ptr/make_shared.hpp> struct X { X(const int* ) {} }; struct Y { Y(int& ) {} }; int _main(int argc, char* argv[]) { int i = 123; boost::bind(&boost::make_shared<int>); boost::bind(&boost::make_shared<int, int>, i); boost::bind(&boost::make_shared<int, int>, 123); boost::bind(&boost::make_shared<X, int*>, &i); boost::bind(&boost::make_shared<Y, int&>, boost::ref(i)); return 0; }

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[interprocess] shared_memory_object constructor with create_only parameter
by Philipp Hamann 25 Jan '10

25 Jan '10

Hi all, I have some problems using the shared_memory_object constructor with the create_only parameter. The goal is to allow only one process to write to the shared memory. So I create a shared_memory_object with the create_only parameter. For the first process this is successful (as I assumed), but for the second process (same parameters) this is successful, too (not as I assumed). The documentation of boost says that it should throw an exception, if the shared memory is allready created. Is this a bug or a misuse or understanding of the library? I am using WinXP, boost 1.41 and MinGW 5.1.6. Probably this is a problem concerning the special handling of the shared memory using Windows? I realized another problem. If I call the static function shared_memory_object::remove(const char* name), the memory should be removed only when no further process has access to the memory. This seems also not to work. I did the following: 1. create shared memory for writing. 2. open shared memory for reading 3. shared_memory_object::remove(const char* name) (from the reading process) 4. reopen the shared memory for reading -> exception: can not find the file Any suggestions to my issues? Thanks in advance Philipp

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[Test] Problem with autolink
by Simon Pickles 25 Jan '10

25 Jan '10

Hello, I have been using boost.test with reasonable success, then all of a sudden I have a link error. Obviously I have changed something aobut my project settings. Perhaps someone could help me identify what I have done. I am using boost 1.41.0 on msvc 9.0. The linker is looking for LINK : fatal error LNK1104: cannot open file 'boost_unit_test_framework-vc90-mt-gd-1_41.lib' This lib is not built by running bjam. I have tried all manner of bjam arguments even: bjam --build-type=complete but I only get boost*.dll and libboost*.lib libraries built. I have tried adding #define BOOST_TEST_DYN_LINK and removing it! All this has no effect on my link error, or the file to which the linker is linking. Thanks for any guidance. Si

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Re: [Boost-users] what is template<typename> struct +; ?
by Tan, Tom (Shanghai) 25 Jan '10

25 Jan '10

>I don't see this in adapt_struct.hpp. Which version of Boost are you >finding this in ? Oops, It's my mistake, it seems I accidently replaced "sequence_tag" with "+" in the editor without noticing it.

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Integrating Boost::Test into a logger
by Charles Solar 25 Jan '10

25 Jan '10

I am wondering if its possible to integrate boost::test into my logging system so I can segregate the log messages into the individual tests. Right now I have the results redirecting to a file, but all I get is 'this succeeded, this failed' and there is no way to go into my apps log file and tie the failed tests to the log messages. I was wondering if there is some mechanism I can write up that will allow me to log the test name at the beginning and end of the test so I end up with output like: LOG_INFO: Starting test 'zero_length_string_test' LOG_ERROR: String is zero length! LOG_WARN: Could not create new string LOG_INFO: End test 'zero_length_string_test' Then when I go to my results I can do a quick search of my apps log to find out why something failed. So is there someway to get a hold of the current test name in a fixture, or is there someway to setup a global fixture that is executed for each test and has this information? Thanks

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what is template<typename> struct +; ?
by Tan, Tom (Shanghai) 25 Jan '10

25 Jan '10

While trying to read \boost\fusion adapt_struct.hpp and understand the internals of BOOST_FUSION_ADAPT_STRUCT. I came across this code: namespace boost { namespace mpl \ { \ template<typename> \ struct +; \ \ //.... }} Can anyone please explain what " template<typename> struct +; " means here? I am puzzled how it ever compiles as an operator is used as a class name. Thanks.

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Specific Time Zone In boost::posix_time::ptime
by Yan Cheng Cheok 25 Jan '10

25 Jan '10

I have the following time : 2010-01-25 03:13:34.384 - GMT Time Zone 2010-01-25 11:13:34.384 - My Local I wish to convert to timestamp in ms. However, since I only obtain local time string from caller "2010-01-25 11:13:34.384" If I do it this way : // ts is "2010-01-25 11:13:34.384" (My Local) boost::posix_time::ptime t(boost::posix_time::time_from_string(ts)); boost::posix_time::ptime end(boost::gregorian::date(1970,1,1)); boost::posix_time::time_duration dur = t - end; // epoch is 1264418014384 // 2010-01-25 11:13:34.384 (GMT) -- But I want 2010-01-25 03:13:34.384 // 2010-01-25 19:13:34.384 (My Local) -- But I want 2010-01-25 11:13:34.384 long long epoch = dur.total_milliseconds(); Is there any way to tell boost::posix_time, that the ts string which it receives, is belong to My Local timezone?

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